CVE-2026-66788

Description

A flaw was found in Lighthouse. A remote attacker, by compromising a spoke cluster, can exploit a vulnerability where the destination namespace for resource injection is derived from an attacker-controlled label or annotation on the broker object. This allows the attacker to inject unauthorized EndpointSlices and ServiceImports into any namespace on peer clusters, including critical system namespaces like kube-system and openshift-*. This could lead to privilege escalation or other forms of system compromise within the cluster.

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Produits concernés

• Red Hat Advanced Cluster Management for Kubernetes 2.16
• Red Hat Advanced Cluster Management for Kubernetes 2.17

Scores CVSS

Faiblesses (CWE)

• CWE-1104

Références

• https://access.redhat.com/errata/RHSA-2026:63016
• https://access.redhat.com/errata/RHSA-2026:85227
• https://access.redhat.com/security/cve/CVE-2026-66788
• https://bugzilla.redhat.com/show_bug.cgi?id=2507533

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories